I can't always reply.

[SL68]

Hi
Why is it that I can't reply to some of the topics ?
For example I can't reply in the "Is This Address Still Up-To-Date? category."

[SL68]

Please review your login status, most likely you are not logged in or you have entered a locked topic. Quick reply entry is still working properly.

I'm logged in.
Also sometimes I can't see the last post posted .
For example in the FEEDBACK thread under Courteney Cox,the last post was June 19th 2021 but the last post I see is July 31st,2018.